
PDA/EA光固化树脂的光热效应及光响应形状记忆行为研究
陈现景, 于浩, 刘博, 穆雅楠, 于虎娜
PDA/EA光固化树脂的光热效应及光响应形状记忆行为研究
Study on Photothermal Effect and Light-responsive Shape Memory Behavior of PDA/EA Photopolymer Resin
通过引入聚多巴胺(PDA)增强交联作用和界面相互作用,制备一系列不同配比的聚多巴胺/环氧丙烯酸酯(PDA/EA)固化物,利用动态热机械(DMA)和热失重(TGA)等方法进行分析。结果表明:PDA的掺入有效提高了材料的储能模量、交联密度、损耗模量峰值温度及热稳定性。同时,PDA/EA材料在近红外(NIR)光源下表现出良好的光热效应,具有较好的光吸收性、光稳定性和光控制性。特别是在光强度为1 W/cm2的808 nm NIR光照射下,PDA-EA-0.1的固化材料在60 s内即可完成光响应形状回复。PDA/EA固化物具有优异的光热转化效率和形状记忆性能,在光热治疗和微纳米结构控制等领域的应用前景广阔。
By introducing polydopamine (PDA) to enhance cross-linking and interfacial interactions, a series of polydopamine/epoxy acrylate (PDA/EA) cured products with various ratios were prepared and analyzed using methods such as dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA). The results show that the incorporation of PDA effectively increased the storage modulus, cross-linking density, peak temperature of loss modulus, and thermal stability of the materials. Additionally, PDA/EA materials exhibited good photothermal effects under NIR light, with desirable light absorption, photostability, and light controllability. Especially under 808 nm NIR light with an intensity of 1 W/cm², the cured material of PDA-EA-0.1 could complete photo-responsive shape recovery within 60 s. PDA/EA cured products have excellent photothermal conversion efficiency and shape memory properties, and they hold broad prospects for application in fields such as photothermal therapy and micro/nanostructure control.
聚多巴胺 / 环氧丙烯酸酯 / 光热效应 / 光响应 / 形状记忆
PDA / EA / Photothermal effect / Light-responsive / Shape memory
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